Rail device for engaging with bed

ABSTRACT

A rail device for engaging with a side of a bed includes a frame which is pressed under the mattress and two connection devices connected to the frame. Two tubes are pivotally connected to the two connection devices and two transverse bars are respectively and pivotally connected between the two tubes and the two connection devices. The frame can be disengaged from the two connection devices and the two transverse bars can be folded at a mediate portion thereof.

FIELD OF THE INVENTION

[0001] The present invention relates to a rail device which has a frameinserted below the mattress and the bars of the rail device can befolded to be a compact assembly.

BACKGROUND OF THE INVENTION

[0002] A conventional playpen is used to let a baby sleep or crawltherein so that it has a bottom and four side rails. The side rails arecooperated with fabrics so that the baby can not crawl over the siderails and is safe in the playpen. When the baby grows, the playpen issmall for the baby so that the adults could put the baby on a bed andkeep an eye on the baby who is vigorous and tries to crawl out from thebed. It is necessary to have a rail device that can be connected to aside of the bed so that the baby cannot crawl out from the bed. However,the conventional rail device involves a complicated structure and a lotof parts. The size of the conventional rail device is so huge that themother of the baby feels inconvenient to install or removed the raildevice from the bed.

SUMMARY OF THE INVENTION

[0003] In accordance with one aspect of the present invention, there isprovided a rail device which comprises a U-shaped frame having two endsthereof respectively connected to two respective connection devices.Each of the connection devices has a first plate and a second platebetween which a first tube is pivotally connected. Each of the firstplate and the second plate has a notch defined therein. A firsttransverse bar is pivotally connected between the two second plates ofthe two connection devices, and a second transverse bar is pivotallyconnected between the two first tubes. Each of the first tubes has afirst pin extending therethrough and two aligned slots defined through awall of each of the first tubes. A spring is received in each of thefirst tubes and a first end of the spring contacts the first pin and asecond end of the spring is engaged with a stop member. A second pinextends through the stop member and two ends of the second pin movablyextend through the two slots in each of the first tubes. The two ends ofthe second pin are engaged with the two notches in the first plate andthe second plate.

[0004] The primary object of the present invention is to provide a raildevice that can be easily folded and is installed with or disengagedfrom the bed.

[0005] The present invention will become more obvious from the followingdescription when taken in connection with the accompanying drawingswhich show, for purposes of illustration only, a preferred embodiment inaccordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006]FIG. 1 is a perspective view to show the rail device of thepresent invention.

[0007]FIG. 2 is an exploded view to show a first tube and a connectiondevice of the rail device of the present invention.

[0008]FIG. 3 is a cross sectional view to show the connection of thefirst tube and the connection device of the rail device of the presentinvention.

[0009]FIG. 4 is a side view to show the first tube is pivoted relativeto the connection device of the rail device of the present invention.

[0010]FIG. 5 is an exploded view to show a connector and two tubescomposed of the second transverse bar of the rail device of the presentinvention.

[0011]FIG. 6 is an exploded view to show the rail device is folded andthe frame is separated into sections.

DETAILED DESCRIPTION OF THE INVENTION

[0012] Referring to FIGS. 1 to 3, the rail device of the presentinvention comprises a U-shaped frame 12 having two ends thereofrespectively connected to two respective connection devices 1, and theframe 12 is inserted beneath the mattress 2 as shown in FIG. 1. Theframe 12 is composed of four sections which are convenient to be storedas shown in FIG. 6. Each of the connection devices 1 has a first plate111 and a second plate 1112 between which a first tube 130 is pivotallyconnected by inserting a pin 15 through holes 115 in the first plate 111and the second plate 1112, and a hole 133 in the first tube 130. Each ofthe first plate 111 and the second plate 1112 having a notch 1110/11120defined therein. Each of the second plates 1112 has a support port 11121extending therefrom and a first transverse bar 12A is pivotallyconnected between the two support ports 11121 on the two second plates1112. The first transverse bar 12A is connected to the two respectivesupport ports 11121 by a resilient pin 12A1 so that when pushing theresilient pins 12A1 inward, the first transverse bar 12A can bedisengaged from the two respective support ports 11121.

[0013] Each of the first tubes 130 has a first pin 132 extendingtherethrough and two aligned slots 131 are defined through the wall ofeach of the first tubes 130. A spring 114 is received in each of thefirst tubes 130 and a first end of the spring 114 contacts the first pin312 and a second end of the spring 114 is engaged with a stop member 112received in the first tube 130. A second pin 113 extends through apassage 1121 of the stop member 112 and two ends of the second pin 113movably extend through the two slots 131 in each of the first tubes 130.The two ends of the second pin 113 are engaged with the two notches1110, 11120 in the first plate 111 and the second plate 1112 so that thefirst tubes 130 are positioned vertical to the frame 12. Two knobs 1131are connected to the two ends of the second pin 113 so that the user mayhold the knobs 1131 to lift the stop member 112 and the second pin 113is removed from the notches 1110, 11120. By this way, the first tubes130 can be folded away the frame 12 as shown in FIG. 4 and this statusis convenient for the adult to hold the baby.

[0014] A second transverse bar 13 composed of two second tubes 134 ispivotally connected between the two first tubes 130. The two secondtubes 134 are connected to the two respective first tubes 130 by twopivotable joints 135. Two respective first ends of the two second tubes134 are respectively connected to the two pivotable joints 135 and tworespective second ends of the two second tubes 134 are pivotallyconnected to a connector 31 as shown in FIG. 5 by inserting a pin 312through holes 311 in the connector 31 and holes 1340 in the second tubes134. The connector 31 has an aperture 310 and a top member 32 is mountedto the connector 31. The top member 32 has a push plate 321 pivotallyextending therefrom which is located in alignment with the aperture 310.Two V-shaped biasing members 33 are respectively received in the tworespective second ends of the two second tubes 134. Each of the biasingmembers 33 has an end extending from the second end of each of thesecond tubes 134 and can be pushed inward by the push plate 321 via theaperture 310. Each of the biasing members 33 has a position pin 331which is movably inserted through a hole 1340 in each of the two secondtubes 134. When the end of the biasing member 33 is pushed inward by thepush plate 321, the two second tubes 134 can be pivoted relativeconnector 31 and folded to be a compact status as shown in FIG. 6.

[0015] While we have shown and described the embodiment in accordancewith the present invention, it should be clear to those skilled in theart that further embodiments may be made without departing from thescope of the present invention.

What is claimed is:
 1. A rail device comprising: a U-shed frame havingtwo ends thereof respectively connected to two respective connectiondevices, each of said connection devices having a first plate and asecond plate between which a first tube is pivotally connected, each ofsaid first plate and said second plate having a notch defined therein, afirst transverse bar pivotally connected between said two second platesof said two connection devices, a second transverse bar pivotallyconnected between said two first tubes, each of said first tubes havinga first pin extending therethrough and two aligned slots defined througha wall of each of said first tubes, a spring received in each of saidfirst tubes and a first end of said spring contacting said first pin anda second end of said spring engaged with a stop member, a second pinextending through said stop member and two ends of said second pinmovably extending through said two slots in each of said first tubes,said two ends of said second pin engaged with said two notches, in saidfirst plate and said second plate.
 2. The rail device as claimed inclaim 1, wherein said second transverse bar includes two second tubes,two respective first ends of said two second tubes respectivelyconnected to said two first tubes and two receptive second ends of saidtwo second tubes pivotally connected to a connector, said connectorhaving an aperture and a top member mounted to said connector, said topmember having a push plate pivotally extending therefrom which islocated in alignment with said aperture, two biasing membersrespectively received in said two respective second ends of said twosecond tubes, each of said biasing members having an end extending fromsaid second end of each of said second tubes and being accessed by saidpush plate via said aperture, each of said biasing members having aposition pin which movably inserted through a hole in each of said twosecond tubes.
 3. The rail device as claimed in claim 1, wherein each ofsaid second plates has a support port extending therefrom and said firsttransverse bar is pivotally connected between said two support ports onsaid two second plates.